Gas separation: processes – With control responsive to sensed condition – Electric or electrostatic field
Patent
1992-09-14
1993-11-16
Hart, Charles
Gas separation: processes
With control responsive to sensed condition
Electric or electrostatic field
95 58, 96 19, 96 74, B03C 366
Patent
active
052619311
ABSTRACT:
SO.sub.3 flue gas-condition systems (10) provide a controlled flow of flue gas-conditioning agent such as SO.sub.3 into a boiler flue gas and its entrained particulate material ahead of an electrostatic precipitator (14). The systems (10) monitor the opacity of the stack effluent and precipitator power and operate to maintain a flow of SO.sub.3 -conditioning agent into the boiler flue gas to provide minimal opacity of the stack effluent. The systems operate at SO.sub.3 -conditioning agent flow rate corresponding to minimal opacity of the stack effluent and to eliminate corrections that may be due to transient operating conditions such as boiler upsets, precipitator rapping and the like. The systems include features providing improved conversion of SO.sub.2 into SO.sub.3, integrated assemblies to provide a flow of SO.sub.2 and sulfur dioxide conversion units adapted to convert SO.sub.2 into SO.sub.3 at a plurality of remote SO.sub.3 injection sites.
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Hart Charles
Wilhelm Environmental Technologies, Inc.
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